Find the distance between a point (-3,4) and a vertical line at x=4

7

Step-by-step explanation:

The distance is given by the length of a line perpendicular to x=4, that contains point (-3,4). Since x=4 is vertical, the perpendicular line is horizontal, so it must be y=4 to pass through (-3,4). y=4 crosses x=4 at (4,4).

The distance from (-3,4) to (4,4) is 4 - -3 = 7.

walter needs to make at least 5 more cookies but no more than 40. 5 ≤ x ≤ 40

step-by-step explanation:

20 ≤ x + 15 ≤ 55

subtract 15 from all parts

20-15 ≤ x + 15-15 ≤ 55-15

5 ≤ x ≤ 40

this means how many more cookies he has to make

walter needs to make at least 5 more cookies, but no more than 40 cookies; 5 ≤ x ≤ 40